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Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


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Unique Multi-Wave Calcite from Cave-In-Rock, IL

21.11.2017

This calcite was mined by the Griffith family in 2017 from their private commercial specimen mining operation located in Hastie's quarry in the Spar Mountain area near Cave-In-Rock, Illinois.  Under long wave UV the calcite shows a beautiful rich orange fluorescent response, and a similar, but dimmer response is seen under short wave UV.  This piece really comes to life under mid wave UV, showing bright pink/magenta fluorescence.  The size of this specimen is 70.0 x 59.5 x 54.0 mm, and it weighs 232 grams.

 

There are also clusters of small, cubic, dark purple colored fluorite crystals on this specimen, but they are not fluorescent.

 

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